*{
    margin: 0;
    padding: 0;
}
body{
    color:#333;
    display: block;
}
header{
    margin: 0;
}
ul{
    display: block;
    list-style: none;
    font-size: 0;
    margin-block-start: 1em;
    margin-block-end: 1em;

}
h2{
    display: block;
    margin-block-start: 0.83em;
    margin-block-end: 0.83em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}

img{
    max-width: 100%;
    border: none;
    vertical-align: center;
}
a{
    cursor: pointer;
    text-decoration: none;
}
li{
    font-size: 18px;
    display: list-item;
    text-align: match-parent;
}
a:hover{
    outline: none;
}
p:hover{
    cursor: pointer;
}
.btn{
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 4px;
    background: #389eac;
    box-shadow: 1px 1px 3px 0 rgba(0, 0, 0, 0.2);
    color: #fff;
    font-size: 16px;
    line-height: 1;
    -webkit-user-select: none;
    user-select:none
}
.line{
    border-bottom:1px solid #ddd;
}
.submit-info{
    margin-right: auto;
    margin-left: auto;
    max-width: 1136px;
}
.submit-chooses{
    display: flex;
    flex-flow: row wrap;
    margin: 0 -20px;
}
.submit-chooses submit-choose{
    box-sizing: border-box;
    margin-bottom: 40px;
    padding: 0 20px;
    width: 50%;
}
.submit-chooses .cover{
    position: relative;
    margin-bottom: 15px;
    width: 359px;
    height: 165px;
}
.shadow{
    box-shadow: 1px 1px 3px rgba(0,0,0,0.2);
}
.cover{
    background-color: #eff2f3;
}
.submit-chooses img{
    object-fit: cover;
}
.cover img{
    width: 100%;
    height: 100%;
    border-radius: 4px;
    opacity: 1;
    transition: opacity .5s ease-in;
}
.submit-chooses p{
    margin-bottom: 10px;
    color:#333;
    font-weight: bold;
    font-size: 18px;
    line-height: 1.2;
}
.submit-chooses span{
    color:#333;
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 40px;
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp:3;
}
#main{
    overflow: visible;
    min-height: calc(100vh - 50px - 40px);
    background: #f8f9f9;
}
#submit-header{
    width: 100vw;
    height: 17.1875vw;
    background: url('https://static.arkread.com/ark/pics/submit/intro/banner-web.04731164.png') no-repeat center/cover ;
}
#submit-aside{
    position: sticky;
    top: calc(60px + 50px);
    display: block;
    align-self: flex-start;
    margin: 60px 0 0;
    background: #f8f9f9;
}

#submit-aside .nav{
    margin-bottom: 60px;
}
#submit-aside .nav-item{
    margin-bottom: 20px;
}
#submit-aside .nav-link.active{
    font-weight: bold;
}
#submit-aside .nav-link{
    color: #777;
    font-size: 18px;
    line-height: 1.2;
    margin-left: 20px;
}
#submit-aside .btn{
    max-width: 200px;
    height: 45px;
}
#submit-main{
    margin-bottom: 65px;
    background: #f8f9f9;
    line-height: 1.6;
}
#submit-main section:not(:last-child){
    position: relative;
}
#submit-main section{
    max-width: 1136px;
}
#submit-main .hd{
    margin-bottom: 0;
}
#submit-main section{
    max-width: 1136px;
}
#submit-main section:first-child .hd h2.title {
    padding-top:50px;
    word-wrap:break-word;
}
#submit-main .hd h2.title {
    margin-bottom: 20px;
    padding-top: 40px;
    font-weight: bold;
    font-size: 24px;
    line-height:1.2;
}
#submit-main .bd{
    padding-bottom: 40px;
}
#submit-alien{
    margin-left: 15px;
}
@media(min-width:768px) and (min-width:1024px){
    .submit-info{
        padding-right: 60px;
        padding-left: 60px;
    }}

@media(min-width:768px){
    .submit-info{
        padding-right: 60px;
        padding-left: 60px;
        display: grid;
        grid-template-columns: repeat(3,minmax(0,1fr));
    }
}
@media(min-width:768px){
    #submit-aside{
        grid-column: span 1/span 1;
    }
}
@media(hover:hover){
    .btn:hover{
        background:#108899;
        color: #fff;
    }
}
@media(min-width:768px){
    #submit-main{
        grid-column: span 2/span 2;
    }
}